霍尔的情人
2018-11-21 15:56
<!DOCTYPE html>
<html>
<head>
<title> 事件</title>
<script type="text/javascript">
function count(){
var v1 = document.getElementById ("txt1").value;
var v2 = document.getElementById ("txt2").value;
var v3 = document.getElementById ("select").value;
var result = "";
switch(v3){
case "+":
result = parseInt(v1)+parseInt(v2);
break;
case "-":
result = parseInt(v1)-parseInt(v2);
break;
case "*":
result = parseInt(v1)*parseInt(v2);
break;
default:
result = parseInt(v1)/parseInt(v2);
}
document.getElementById("fruit").value = result;
}
</script>
</head>
<body>
<input type='text' id='txt1' />
<select id='select'>
<option value='+'>+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type='text' id='txt2' />
<input type='button' value=' = ' onclick='count()' />
<input type='text' id='fruit' />
</body>
</html>请问这哪里有错啊???为什么就是没有反应呢?Hbuilder报错的时候说:[Web浏览器] "Uncaught SyntaxError: Unexpected token ILLEGAL" /js测试/new_file.html (13)
;分号要在英文状态下输出!
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